Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Highly efficient nanoporous TiO2-polythiophene hybrid solar cells are reported. A metal-free organic dye (D102) is employed to modify the TiO2/polythiophene interface. Results indicate dye and interfacial engineering are crucial for highly efficient TiO2/P3HT hybrid solar cells.
A general two-step approach has been developed for the synthesis of very small and sintering-resistant bimetallic gold−silver nanoparticles on inert supports including commercial silica and alumina. In this approach, gold particles were formed in the first step on amino-functionalized silica or alumina support. Our de…
To date, the knowledge of the multiple roles of additives in calcium carbonate crystallization results from empirical control of crystal growth. We present a crystallization assay generating controlled supersaturation, which allows the categorization of different modes of additive action. This facilitates a novel unde…
We demonstrate an effective method for depositing smooth silver (Ag) films on SiO(2)/Si(100) substrates using a thin seed layer of evaporated germanium (Ge). The deposited Ag films exhibit smaller root-mean-square surface roughness, narrower peak-to-valley surface topological height distribution, smaller grain-size di…
Polymeric formulations (micelles, vesicles etc.) have emerged as versatile drug carriers due to their increased stability, site specificity, blood circulation resistance and thus overall potential therapeutic effects compared to liposomes. Furthermore, stimuli-responsive systems have been developed whose properties ch…
Mesoporous silica nanoparticles functionalized by surface hyperbranching polymerization of poly(ethylene imine), PEI, were further modified by introducing both fluorescent and targeting moieties, with the aim of specifically targeting cancer cells. Owing to the high abundance of folate receptors in many cancer cells a…
All multiwall carbon nanotube (MWNT) thin films are created by layer-by-layer (LBL) assembly of surface functionalized MWNTs. Negatively and positively charged MWNTs were prepared by surface functionalization, allowing the incorporation of MWNTs into highly tunable thin films via the LBL technique. The pH dependent su…
Abstract Hydrogen can have a pronounced effect on the mechanical properties of titanium (Ti) and Ti alloys, such as deformation, fracture, and fatigue life. The delayed fracture of medical Ti alloy devices is commonly caused by hydrogen embrittlement. Experimentally, we confirmed that the degradation in the performanc…
First principles calculations based on density functional theory predict a highly selective adsorption site for Mg atoms and negligible preference for the growth of Mg islands on the tubular surface of Mg-intercalated (small diameter) boron nanotubes, thereby establishing the criterion for understanding the growth mec…
See PDF file for details.
Recent atomistic simulations have shown that grain boundary sliding in nanocrystals is altered under shock loading conditions. It is found that the high state of compression inhibits grain boundary sliding and reactivates intragrain dislocation activity. This leads to higher material strength and postpones the transit…
Abstract— Multistable electro‐optical modes exist under certain conditions in ferroelectric liquid‐crystal (FLC) cells, which means that any light‐transmission level can be memorized after the driving voltage is switched off. The multistability is responsible for three new electro‐optical modes with different shapes o…
Abstract Novel asymmetric metallocene catalysts lead to low isotactic polypropylenes (iPP) with randomly distributed stereo irregularities. The polypropylenes are low crystalline and show elastic mechanical behavior due to physical crosslinking. The morphology of such iPP, which is responsible for the observed mechani…
The solubilities of sebacic acid in mixed solvents n -propanol + water have been measured by a dynamic method using a laser monitoring observation technique over a temperature range (288 to 351) K. A synergistic effect on solubility was found to occur in sebacic acid + n -propanol + water mixed systems. To detect the…
We report subwavelength localization of electromagnetic fields within cavities based on metamaterials. Cavity resonances are observed in the transmission spectrum of a split-ring resonator and composite metamaterials cavity structures. These cavity resonances are shown to exhibit high-quality factors. Since the unit c…
The viscoelastic property of a polyethylene glycol (PEG) solution was studied using a quartz crystal resonator technique. The technique probes the solution in the region adjacent to the surface of the quartz crystal. The results reveal the properties of the boundary layer with a thickness of about the viscous penetrat…
Abstract This article describes a method for the determination of kinetic constants in aniline polymerizations performed in the presence of dodecylbenzene sulfonic acid. The procedure was based on the measurement of light absorbances at 668 and 1026 nm. The absorption at 668 nm is related to pernigraniline formation a…
The electrical modulation of the magnetoresistance (MR) from −70% to 80% under a small magnetic field of 200Oe near room temperature is found in multi-p-n heterostructures of SrTiO3−δ∕La0.9Sr0.1MnO3∕SrTiO3−δ∕La0.9Sr0.1MnO3∕Si we fabricated. The mechanism causing the modulation of MR by applied bias is proposed as the…
Abstract Natural rubber (NR) latex films surface‐grafted with hydrophilic monomers, poly(ethylene glycol) methacrylate (PEGMA), N ‐vinylpyrrolidone (VPy), and 2‐methacryloyloxyethyl phosphorylcholine (MPC), were prepared by UV‐induced graft polymerization using benzophenone as a photosensitizer. The grafting yield inc…
Thick anodic layers on pure Mg were produced by anodization in a nonaqueous electrolyte. The most promising systems for growth of thick, uniform anodic layers were nominally water-free methanol or ethanol electrolytes containing nitrate ions. The layer thickness shows a linear dependence on the applied voltage and on…